Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
47 Cards in this Set
- Front
- Back
|
Wave
|
Created by a vibration; a disturbance that transfers energy throught matter and empty space.
|
|
|
Medium
|
Matter; the stuff waves travel through.
|
|
|
Transverse Wave
|
A wave where the medium moves at right angles to the motion of the wave
|
|
|
Compression Wave
|
Awave where the medium moves at rigin the same direction as the motion of the wave
|
|
|
Amplitude
|
The amount of energy a wave transfers
|
|
|
Crest
|
Highest point of a transverse wave.
|
|
|
Trough
|
Lowest point of a transvserse wave
|
|
|
Wavelength of Transverse wave
|
The length of one wave - includes one crest and one trough. Measured in cm etc.
|
|
|
Amplitude of Transverse wave
|
The height of the crest or the depth of the trough of a transverese wave.
|
|
|
rest position
|
The horizontal line that show what the medium is like before the wave disturbes it.
|
|
|
Compression
|
The dense or squeezed part of a compression wave
|
|
|
Rarefaction
|
The spread out or less dense area of a compression wave
|
|
|
Amplitude of a Compression wave
|
Measures by how tightly packed the particles of the medium are in the compression
|
|
|
Wavelenght of a Compression Wave
|
The distance between one compression and one rarefaction
|
|
|
Frequency
|
the number of waves past a point in1 second. unit: hertz (hz)
|
|
|
Diffraction
|
The bending of a wave when it goes around a barrier
|
|
|
Resonance
|
The ability of an object to vibrate by absorbing energy at its natural frequency.
|
|
|
Interference
|
The combining of two or more waves. either constructive or destructive.
|
|
|
Refraction
|
The bending of a wave as it moves from one medium to another
|
|
|
Reflection
|
The bouncing back of a wave when it hits a barrier
|
|
|
Doppler Effect
|
The change in frequency or pitch that occurs when the source of a sound wave is moving relative to the observer
|
|
|
Intensity of sound
|
The amount of energy a sound wave carries measure in decibels. dB
|
|
|
Loudness of sound
|
How human perceive the intensity of a sound wave
|
|
|
Pitch
|
How humans perceive the frequency of sound waves.
Pitch and Frequency have a positive relationship. |
|
|
resonator
|
A hollow air filled space that amplifies sound when it is vibrated
|
|
|
Sonar
|
Man made device that uses sound to determine the location and distance to objects under water.
|
|
|
Ultrasonic
|
Frequencies above human hearing; above 20,000hz
|
|
|
Electromagnetic wave
|
Waves created by vibration electron that can travel thru a vacuum or a medium. A wide variety of frequencies and wavelengths are possible
|
|
|
gamma ray
|
Highest energy electromagnetic wave. Very short wavelength and very high frequency
|
|
|
infrared wve
|
electromagnetic waves we associate with radiant heat. Wavelenght and frequency just below human sight.
|
|
|
Ultra violet rays
|
electromagnetic waves with wavelengths and frequecies just above human vision. Harmful
|
|
|
Radiowaves
|
electromagnetic wave with longest wavelenghts and frequencies
|
|
|
Microwaves
|
a specific type of radio wave used for cooking food and transmitting data
|
|
|
Visible light
|
The part of the electromagnetic spectrum humans can see.
ROYGBV |
|
|
X-rays
|
electromagnetic waves with wavelengths that a just longer then gamma rays. Penetrate skin
|
|
|
opaque
|
Material that does not allow light to be transmitted
|
|
|
translucent
|
Material that allows light to be transmitted thru it but not clearly Wax paper, frosted glass
|
|
|
transparent
|
Materal that allows to be clearly transmitted thru it.
|
|
|
Concave mirror
|
Reflects light from a surface that is curved inward. Can magnify objects or create light beams
|
|
|
Concave lens
|
diverges light ray to form smaller, upright virtual images. Thinnger in the middle and thicker on the edge.
|
|
|
Convex mirror
|
Reflects light from a surface that curves outwards adn forms smaller upright, virtual images.
|
|
|
Convex lens
|
Converges light rays; thicker in the middle than the edges can form real and virtual images
|
|
|
virtual image
|
upright reflected image your brain understands but no light passes thru it
|
|
|
real image
|
Upside down opitical image formed when light passes throught an object
|
|
|
LASER
|
Device that produces coherent light and is used in medical treatments and in industry and science.
|
|
|
coherent light
|
Light with one wavelength that travels with all crest and troughs lined up
|
|
|
Symbol for wavelength
|
λ
|
